使用tcc編譯器

TCC是純C編譯器,支持C99標準,有些獨到特點。

1. TCC的主頁（已停止開發）

2. 編譯TCC

gcc -O2 -shared -Wall -Wl,--export-all-symbols -mpreferred-stack-boundary=2 -march=i386 -falign-functions=0 -fno-strict-aliasing -DTCC_TARGET_PE -DLIBTCC -o libtcc.dll tcc.c

或者

tcc -shared -rdynamic -o libtcc.dll tcc.c #這樣會導出所有函數，有些亂。

tcc -shared libtcc.c -DLIBTCC_AS_DLL -DTCC_TARGET_PE -o libtcc.dll -Ic:\tcc\include\winapi -I c:\tcc\include -I. -Lc:\tcc\lib #這樣產生的動態鏈接庫導出表函數正常。

3.嵌入（示例：test.c）

# define TCC_TARGET_PE

/*
 * Simple Test program for libtcc
 *
 * libtcc can be useful to use tcc as a "backend" for a code generator.
 */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "libtcc.h"

/* this function is called by the generated code */
int add(int a, int b)
{
    return a + b;
}

char my_program[] =
"int fib(int n)\n"
"{\n"
"    if (n <= 2)\n"
"        return 1;\n"
"    else\n"
"        return fib(n-1) + fib(n-2);\n"
"}\n"
"\n"
"int MsgBox()\n"
"{"
"    return MessageBoxA(0,\"Hello world!\",\"Title\",0);\n"
"}"
"\n"
"int foo(int n)\n"
"{\n"
"    printf(\"Hello World!\\n\");\n"
"    printf(\"fib(%d) = %d\\n\", n, fib(n));\n"
"    printf(\"add(%d, %d) = %d\\n\", n, 2 * n, add(n, 2 * n));\n"
"    return 0;\n"
"}\n";

int main(int argc, char **argv)
{
    TCCState *s;
    int (*func)(int);
    int (*MyFunc)();
    void *mem;
    int size;

    s = tcc_new();
    if (!s) {
        fprintf(stderr, "Could not create tcc state\n");
        exit(1);
    }
    /* if tcclib.h and libtcc1.a are not installed, where can we find them */
    if (argc == 2 && !memcmp(argv[1], "lib_path=",9))
        tcc_set_lib_path(s, argv[1]+9);

    /* MUST BE CALLED before any compilation */
    tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
    tcc_add_library(s, "user32");

    if (tcc_compile_string(s, my_program) == -1)
        return 1;

    /* as a test, we add a symbol that the compiled program can use.
       You may also open a dll with tcc_add_dll() and use symbols from that */
    tcc_add_symbol(s, "add", add);

    /* get needed size of the code */
    size = tcc_relocate(s, NULL);
    if (size == -1)
        return 1;

    /* allocate memory and copy the code into it */
    mem = malloc(size);
    tcc_relocate(s, mem);

    /* get entry symbol */
    func = tcc_get_symbol(s, "foo");
    if (!func)
        return 1;

    MyFunc = tcc_get_symbol(s, "MsgBox");

    /* delete the state */
    tcc_delete(s);
	MyFunc();
    /* run the code */
    func(32);

    free(mem);
    return 0;
}

編譯：tcc -o test.exe test.c libtcc.def

運行：test.exe lib_path=c:\tcc (內含lib目錄：libtcc1.a, kernel32.def, msvcrt.def) 本例還需user32.def (tiny_impdef user32.dll -o user32.def)

4. 評價

優點：小巧，編譯速度快，可內嵌（這點很棒）。

缺點：開發已停止，導出函數列表無法用def文件控制。